Note: 1.This wristband does not support the Blood pressure/Blood Oxygen /ECG monitor. 2.Wristband compatible for Android 4.4 and above, IOS8.4 and above. Pls check if the phone matchs up the OS before you place a order. 3.The bracelet supports the life waterproof, you can wear it to wash hands, but not put it into the water or take a shower with it. 4.You need connect to the watch via the app and download the app by scanning the QR code, searching the keywords "Wearfit 2.0" in the Android or Apple Store Q&A of Letike Smart Wristband 1.Why it cannot count steps accurately? Our tracker will not collect the data from parallel movement, such as push a trolley.If you walk less than 50 steps, the data will go back to original data. 2.Why it cannot count heart rate accurately? You can input your personal information in the app and wear the wrist tightly.The theory of heart rate monitor is a reflection of green light in the tissue. the green light can reflect the blood in the tissue clearly 3.Why the sleep analysis is not accurately? Sleep monitoring will start from 10:00 pm to 8:00 am automatically, the data will sync with your phone App once the bluetooth connected.you can aslo set your sleep monitoring time Specification OLED screen size:0.66inch Bluetooth version:BT4.0 Battery type:pllymer lithium Battery capacity :105mAh Strap size:9.76inch*0.95inch*0.43inch Material:sillica gel and platics Waterproof:IP68 What You Get: 1* Smart Wristband 1* User Manual 1* Charging Cable
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